Capacitive thin film touch film and touch module

Abstract

The utility model discloses a capacitive film touch control film and touch control module, the capacitive film touch control film comprises a body, the body comprises an outer circular ring and an inner circular part which are located on the same plane, the outer circular ring is provided with a notch to form two end points, and the inner circular part is provided with a plurality of through holes. Wherein a bending part and an inserting part are respectively led out from one end point inwards and outwards, the bending part is connected with the inner circle part, and the length of the bending part is greater than the radius difference of the outer circular ring with the inner circle part. When the rotary knob needs to be assembled on the rotary knob, the inner circle part is folded through the bending part, so that the inner circle part and the outer circular ring form a concentric circle state, the bent inner circle part is arranged on the upper surface of the rotary knob, the outer circular ring is arranged on the step, and the specific length of the bending part can be designed according to the height of the rotary knob. Therefore, the touch control layout of the knob can be completed by only adopting one thin film touch control film, so that the production and assembly cost is reduced, and the competitiveness of a product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thin film touch control, and more specifically to a capacitive thin film touch control film and a touch control module. Background Art

[0002] With the advancement of technology, capacitive touch technology has been widely used in various electronic devices, among which thin-film touch films are favored because of their thinness, softness, and easy integration. However, traditional thin-film touch film designs often have problems such as complex structure, high production cost, and low touch accuracy. A layer of thin-film touch film is required on the traditional knob, and a layer of thin-film touch film is also required on the buttons on the steps around the knob. Therefore, two layers of thin-film touch film are required. This traditional structure has high production and assembly costs, which reduces the competitiveness of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to integrate the thin film touch film on the upper surface of the knob and the periphery of the step on a thin film touch film to reduce the production and assembly costs and improve the competitiveness of the product.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] In order to solve the above technical problems, the utility model provides a capacitive thin film touch film, which includes a main body, the main body includes an outer ring and an inner circle located in the same plane, the outer ring is provided with a notch to form two endpoints, one of the endpoints is respectively led inwardly and outwardly to have a bending portion and a plug-in portion, the bending portion is connected to the inner circle, and the length of the bending portion is greater than the radius difference between the outer ring and the inner circle.

[0006] As a preferred implementation of the capacitive thin film touch film provided by the present invention, the body includes a thin film layer, a touch function layer and an OCA layer which are sequentially stacked from bottom to top.

[0007] As a preferred implementation of the capacitive thin film touch film provided by the utility model, the touch function layer is provided with a transparent touch area on the inner circle, and the touch function layer is provided with a plurality of touch buttons on the outer circle.

[0008] As a preferred implementation of the capacitive thin film touch film provided by the utility model, the plug-in portion is provided with a plurality of metal wirings electrically connected to the transparent touch area and the plurality of touch buttons respectively.

[0009] The utility model also provides a touch module, which includes a touch column and any of the above-mentioned capacitive thin film touch films, wherein an annular groove is opened at the outer periphery of the top of the touch column to form a step, the outer ring is arranged on the step, and the inner circle is arranged on the upper surface of the touch column.

[0010] As a preferred implementation of the touch module provided by the present invention, the plug-in portion is connected to a mainboard.

[0011] As a preferred embodiment of the touch module provided by the utility model, the mainboard includes a substrate, a circuit portion arranged on the upper surface of the substrate, and a heat dissipation portion arranged on the lower surface of the substrate.

[0012] As a preferred embodiment of the touch module provided by the utility model, the mainboard also includes at least one through-hole portion penetrating the substrate, the circuit portion and the heat dissipation portion, and the inner wall of the through-hole portion is provided with a heat transfer portion in contact with the circuit portion and the heat dissipation portion.

[0013] As a preferred embodiment of the touch module provided by the utility model, a heat conductor connected to an external heat-conducting structure is arranged in the through hole portion, and the heat conductor is in contact with the heat transfer portion.

[0014] As a preferred implementation of the touch module provided by the present invention, the structure of the heat dissipation portion is a mesh structure, a strip structure, a wavy structure or a honeycomb structure.

[0015] The utility model has the following beneficial effects:

[0016] Since the length of the bending portion is greater than the radius difference between the outer ring and the inner ring, the outer ring and the inner ring form an eccentric circle state, and the outer ring and the inner ring are in the same plane, they can be directly manufactured together on the substrate. When it needs to be assembled on the knob, the inner circle is folded up by the bending portion so that the inner circle and the outer ring form a concentric circle state. The bent inner circle is arranged on the upper surface of the knob, and the outer ring is arranged on the step. The specific length of the bending portion can be designed according to the height of the knob, so that the touch layout of the knob can be completed using only one thin-film touch film, so as to reduce production and assembly costs and improve product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic structural diagram of a capacitive thin-film touch film provided by the utility model before being bent.

[0019] Figure 2 for Figure 1 Side view of.

[0020] Figure 3 The present invention provides a schematic diagram of the structure of a capacitive thin-film touch film after being bent.

[0021] Figure 4 for Figure 3 Side view of.

[0022] Figure 5 It is a schematic diagram of the structure of the touch column.

[0023] Figure 6 This is a schematic diagram of the structure of Example 2.

[0024] Figure 7 for Figure 6 Schematic diagram of the improved structure of the main board.

[0025] Description of Figure Numbers:

[0026] Main body 1; outer ring 11; inner circle 12; bending portion 13; plug-in portion 14;

[0027] Thin film layer 101; Touch function layer 102; OCA layer 103;

[0028] The touch column 2 ; the main board 3 ; the substrate 31 ; the circuit portion 32 ; the heat dissipation portion 33 ; and the through hole portion 34 . DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] The utility model provides a capacitive thin film touch film, which comprises a body, wherein the body comprises an outer circular ring and an inner circular portion located in the same plane, the outer circular ring is provided with a notch to form two end points, one of the end points is respectively led inwardly and outwardly to have a bending portion and a plug-in portion, the bending portion is connected to the inner circular portion, and the length of the bending portion is greater than the radius difference between the outer circular ring and the inner circular portion.

[0033] Since the length of the bending portion is greater than the radius difference between the outer ring and the inner ring, the outer ring and the inner ring form an eccentric circle state, and the outer ring and the inner ring are in the same plane, they can be directly manufactured together on the substrate. When it needs to be assembled on the knob, the inner circle is folded up by the bending portion so that the inner circle and the outer ring form a concentric circle state. The bent inner circle is arranged on the upper surface of the knob, and the outer ring is arranged on the step. The specific length of the bending portion can be designed according to the height of the knob, so that the touch layout of the knob can be completed using only one thin-film touch film, so as to reduce production and assembly costs and improve product competitiveness.

[0034] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.

[0035] Example 1

[0036] See also Figures 1 to 4 , a capacitive thin film touch film provided by the utility model includes a body 1, the body 1 includes an outer ring 11 and an inner circle 12 located in the same plane, the outer ring 11 is provided with a notch to form two endpoints, one of the endpoints leads inwardly to a bent portion 13, and the endpoint leads outwardly to a plug-in portion 14, the bent portion 13 is connected to the inner circle 12, and the length of the bent portion 13 is greater than the radius difference between the outer ring 11 and the inner circle 12. Since the length of the bending portion 13 is greater than the radius difference between the outer ring 11 and the inner ring 12, the outer ring 11 and the inner ring 12 form an eccentric circle state, and the outer ring 11 and the inner ring 12 are in the same plane, they can be directly manufactured together on the substrate. When it needs to be assembled on the knob, the inner circle 12 is folded up through the bending portion 13 so that the inner circle 12 and the outer ring 11 form a concentric circle state. The bent inner circle 12 is arranged on the upper surface of the knob, and the outer ring 11 is arranged on the step. The specific length of the bending portion 13 can be designed according to the height of the knob, so that the touch layout of the knob can be completed by using only one thin-film touch film, so as to reduce the production and assembly costs and improve the competitiveness of the product.

[0037] Furthermore, the body 1 includes a film layer 101, a touch function layer 102 and an OCA layer 103 which are stacked in sequence from bottom to top, the touch function layer 102 is provided with a transparent touch area on the inner circular portion 12, and the touch function layer 102 is provided with a plurality of touch buttons on the outer circular ring 11. The plug-in portion 14 is provided with a plurality of metal traces which are respectively electrically connected to the transparent touch area and the plurality of touch buttons, so that the plug-in portion 14 is electrically connected to the transparent touch area and the touch buttons.

[0038] Example 2

[0039] See also Figure 5 and Figure 6 , is a touch module provided by the utility model, which includes a touch column 2 and any of the capacitive thin film touch films described above, a ring groove is opened at the outer periphery of the top of the touch column 2 to form a step, the outer ring 11 is arranged on the step, and the inner circle 12 is arranged on the upper surface of the touch column 2.

[0040] Furthermore, the plug-in portion 14 is connected to the mainboard 3 .

[0041] See also Figure 7The main board 3 includes a substrate 31, a circuit portion 32 disposed on the upper surface of the substrate 31, and a heat dissipation portion 33 disposed on the lower surface of the substrate 31. The arrangement method is that the circuit portion 32 and the heat dissipation portion 33 are respectively attached to the substrate 31 by double-sided adhesive. Since the thickness of the substrate 31 is relatively thin, the heat on the main board 3 can be diffused to the heat dissipation portion 33 through the substrate 31. The heat dissipation portion 33 can effectively increase the heat dissipation area of ​​the main board 3 and play a role in uniform heat dissipation, thereby improving the heat dissipation efficiency of the main board 3. The substrate 31 can be any one of polyimide, polyester, polysulfone or polytetrafluoroethylene, the double-sided adhesive is any one of an acrylic adhesive layer or an epoxy resin adhesive layer, and the heat dissipation portion 33 can be a copper foil layer.

[0042] Furthermore, the mainboard 3 further includes at least one through-hole portion 34 penetrating the substrate 31, the circuit portion 32 and the heat dissipation portion 33, and the inner wall of the through-hole portion 34 is provided with a heat transfer portion in contact with the circuit portion 32 and the heat dissipation portion 33. By utilizing the good thermal conductivity of the through-hole portion 34, the circuit portion 32 and the heat dissipation portion 33 on both sides of the substrate 31 can be electrically connected to play a good thermal conductivity function, and the heat transfer portion can provide a thermal conductivity function to achieve a good heat dissipation effect. Among them, the heat transfer portion can be a copper glue conductive ink layer.

[0043] Furthermore, a heat conductor connected to an external heat-conducting structure is disposed in the through-hole portion 34, and the heat conductor is connected to the external heat-conducting structure from one side of the circuit portion 32, and is also in contact with the heat transfer portion in the through-hole portion 34, so that the circuit portion 32 and the heat dissipation portion 33 can be connected to the external heat-conducting structure through the through-hole portion 34, so that the heat in the mainboard 3 is diffused to the external heat-conducting structure through the heat conductor in the through-hole portion 34, so as to further improve the heat dissipation efficiency of the mainboard 3. Preferably, in order to enable the through-hole portion 34 to be connected to the external heat-conducting structure, the through-hole portion 34 is disposed at the edge of the mainboard 3.

[0044] Furthermore, the heat dissipation portion 33 is a uniform heat dissipation structure, and its structure can be any one of a mesh structure, a strip structure, a wave structure or a honeycomb structure. Through the uniform heat dissipation structure, the heat dissipation effect can be better improved.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A capacitive thin film touch film, characterized in that: It includes a main body, which includes an outer ring and an inner circle located in the same plane. The outer ring is provided with a notch to form two endpoints, one of which has a bending portion and a plug-in portion extending inward and outward respectively, the bending portion is connected to the inner circle, and the length of the bending portion is greater than the radius difference between the outer ring and the inner circle.

2. The capacitive thin film touch film according to claim 1, characterized in that: The body comprises a thin film layer, a touch function layer and an OCA layer which are sequentially stacked from bottom to top.

3. The capacitive thin film touch film according to claim 2, characterized in that: The touch function layer is provided with a transparent touch area on the inner circle, and the touch function layer is provided with a plurality of touch buttons on the outer circle.

4. The capacitive thin film touch film according to claim 3, characterized in that: The plug-in portion is provided with a plurality of metal wirings electrically connected to the transparent touch area and the plurality of touch buttons respectively.

5. A touch module, characterized in that: It comprises a touch column and a capacitive thin film touch film as claimed in any one of claims 1 to 4, wherein an annular groove is provided at the outer periphery of the top of the touch column to form a step, the outer ring is arranged on the step, and the inner circle is arranged on the upper surface of the touch column.

6. The touch module according to claim 5, characterized in that: The plug-in portion is connected with a mainboard.

7. The touch module according to claim 6, characterized in that: The main board includes a substrate, a circuit portion arranged on an upper surface of the substrate, and a heat dissipation portion arranged on a lower surface of the substrate.

8. The touch module according to claim 7, characterized in that: The mainboard further includes at least one through-hole portion penetrating the substrate, the circuit portion and the heat dissipation portion, and an inner wall of the through-hole portion is provided with a heat transfer portion in contact with the circuit portion and the heat dissipation portion.

9. The touch module according to claim 8, characterized in that: A heat conductor connected to an external heat conduction structure is arranged in the through hole portion, and the heat conductor is in contact with the heat transfer portion.

10. The touch module according to claim 7, characterized in that: The structure of the heat dissipation part is a mesh structure, a strip structure, a wave structure or a honeycomb structure.

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